import numpy as np
arr = np.arange(4)
print(arr)
arr1 = np.arange(1,10,2)
print(arr1)
arr2 = np.arange(0,1,0.2)
print(arr2)
arr3 = np.arange(5,0,-1)
print(arr3)
arr4 = np.linspace(2,8,num=60,endpoint=False,retstep=True)
print(arr4)
arr5 = np.linspace(1,2,num=180,endpoint=True,retstep=False)
print(arr5)
arr6 = np.logspace(2,8,num=5,endpoint=False,base=2)
print(arr6)